Compiling jdk8u using XCode 9 or 10

How to compile JDK 8 with the latest Xcode on macOS Mojave, High Sierra or even Catalina beta

Currently (September 2019), openjdk jdk8u can only be compiled with XCode 4, which won't run on the latest macOS. This repo contains patches and information for setting up an environment to compile a JDK using the very latest tools.

By default, build8.sh will build a JDK without Shenandoah GC or JavaFX. Edit the script to turn on these if you need them, or set environment variables (as seen at the top of the script).

A version of this patch has been submitted to the jdk8u-dev mailing list.

Quick start:

The easiest way to get a working JDK8u is:

  git clone https://github.com/stooke/jdk8u-xcode10.git
  ./jdk8u-xcode10/build8.sh

Caveats:

• This patch only works with XCode 9, 10 or 11 beta.

• This patch will produce a JDK that runs on macOS 10.9 and above; the original code runs on macOS 10.7 and above.

• The resultant JDK has not been run through TCK, but can be used to build Graal.

• If you see a crash in a destructor, and the destructor is not virtual, try making the destructor virtual and see if it still crashes. If the issue is fixed, please email me.

The quick way

Clone this repo and run build8. You may edit this script to build jdk8u-dev with Shenandoah GC and/or JavaFX.

Install Prerequisites

Some of these are also required for building JDK 11, so your efforts won't be wasted here. The build script will download and install these (except for Xcode; that one's on you) in a local location, so no action is required if you use these scripts

Install XCode 9, 10 or 11, autoconf, freetype and mercurial. Install a bootstrap JDK; either JDK 7 or JDK 8.
If you have a system JDK 8 installed, the build should find it, but it should be ignored if you use build8.sh.

curl -O -L http://ftpmirror.gnu.org/autoconf/autoconf-2.69.tar.gz
tar -xzf autoconf-2.69.tar.gz
cd autoconf-2.69
./configure --prefix=`pwd`
make install

curl -O https://nongnu.freemirror.org/nongnu/freetype/freetype-2.9.tar.gz
tar -xvf freetype-2.9.tar.gz
cd freetype-2.9
./configure
make

curl -O https://www.mercurial-scm.org/release/mercurial-4.9.tar.gz
tar -xvf mercurial-4.9.tar.gz
cd mercurial-4.9
make local

curl -O -L https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u202-b08/OpenJDK8U-jdk_x64_mac_hotspot_8u202b08.tar.gz
tar -xvf OpenJDK8U-jdk_x64_mac_hotspot_8u202b08.tar.gz

download the JDK and all subrepos

hg clone http://hg.openjdk.java.net/jdk8u/jdk8u-dev jdk8u-dev
cd jdk8u-dev
chmod 755 get_source.sh configure
./get_source.sh

install the patches

cd jdk8u-dev
hg import --no-commit ../jdk8u-xcode10/jdk8u-patch/mac-jdk8u.patch
cd hotspot
hg import --no-commit ../../jdk8u-xcode10/jdk8u-patch/mac-jdk8u-hotspot.patch
cd ../jdk
hg import --no-commit ../../jdk8u-xcode10/jdk8u-patch/mac-jdk8u-jdk.patch

configure the JDK

cd jdk8u-dev
chmod 755 ./configure ./get_source.sh
./configure --with-toolchain-type=clang --with-boot-jdk=`pwd`/../tools/jdk8u202-b08/Contents/Home --with-freetype-include=`pwd`/../tools/freetype-2.9/include --with-freetype-lib=`pwd`/../tools/freetype-2.9/objs/.libs

Optionally, add --with-debug-level=slowdebug to debug the JDK If you're using the XCode 11 beta, disable precompiled headers: --disable-precompiled-headers. There seems to be an issue with honouring include file paths.

build the JDK

make images COMPILER_WARNINGS_FATAL=false

run!

./build/maxosx-x86_64-normal-server-release/images/j2sdk-image/bin/java
./build/maxosx-x86_64-normal-server-slowdebug/images/j2sdk-image/bin/java

TODO

• Make the patch work with libstdc++
• Make the patch work with a 'patched' XCode 10 containing libstdc++. (i.e. copy the libstdc++ libraries and header files from an XCode 9 installation)